Robert Pattinson Is Dating a 'Twilight' Co-Star, Says Jennie Garth

The T.i.ight dating rumors are getting hotter as Jennie Garth, whose husband, Peter Facinelli, stars as Carlisle Cullen, the vampire family patriarch in the T.i.ight series, claims that Robert Pattinson is dating one of his co-stars.

"I can't say [who she is] because that would be breaking my promise to [my husband Peter], but he is dating one of them!" Jennie told The New York Daily News recently at a charity event in NYC.